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. Author manuscript; available in PMC: 2014 Feb 19.
Published in final edited form as: Acc Chem Res. 2012 Nov 16;46(2):506–518. doi: 10.1021/ar300216r

Table 13.

Hf(OtBu)4-BHA Catalyzed Epoxidation of N-Alkenylsulfonamides

graphic file with name nihms421921u14.jpg
entry product yield(%) ee(%)
1 graphic file with name nihms421921t129.jpg 46 90
2 graphic file with name nihms421921t130.jpg 32 84
3 graphic file with name nihms421921t131.jpg 49 93
4 graphic file with name nihms421921t132.jpg 74 64
5 graphic file with name nihms421921t133.jpg 92 91
6 graphic file with name nihms421921t134.jpg 86 77
7 graphic file with name nihms421921t135.jpg 98 87
8 graphic file with name nihms421921t136.jpg 90 89
9 graphic file with name nihms421921t137.jpg 91 70
10 graphic file with name nihms421921t138.jpg 56 46
11 graphic file with name nihms421921t139.jpg 40 34
12 graphic file with name nihms421921t140.jpg 48 20
13 graphic file with name nihms421921t141.jpg 97 92
14 graphic file with name nihms421921t142.jpg 69 90
15 graphic file with name nihms421921t143.jpg 84 62
16 graphic file with name nihms421921t144.jpg 92 42
17 graphic file with name nihms421921t145.jpg 26 31
18 graphic file with name nihms421921t146.jpg 88 9
19 graphic file with name nihms421921t147.jpg 9 67
20 graphic file with name nihms421921t148.jpg 21 45
21 graphic file with name nihms421921t149.jpg 36 31
22 graphic file with name nihms421921t150.jpg 88 87

Ts = p-toluenesulfonyl; Mbs = 4-methoxybenzenesulfonyl; TMS = trimethylsilyl.